Rock is dropped from a height of 89 meters and falls toward Earth in a straight line. What is the average velocity of the rock for the first mfs seconds the rock falls 4.9t^2 meters? How long does it take for the rock to hit the ground? (Round your answer to three decimal places) What is the average velocity of the rock during the time it is falling? (Round your answer to two decimal places) m/s What is the velocity of the rock when it hits the ground? (Round your answer to two decimal places)
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We can use the formula h = 1/2gt^2, where h is the initial height (89 meters), g is the acceleration due to gravity (9.8 m/s^2), and t is the time it takes for the rock to hit the ground. Solving for t, we get: 89 = 1/2(9.8)t^2 t^2 = 89/4.9 t = 4.5 seconds Show more…
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